A complete 20-volume set that teaches Japanese history through illustrations. All are manga published by Shogakukan, but because the release dates vary, there are two different types of obi (book bands). There are no issues with the content. - Series Name: Japanese History - Volumes: Complete 20 volumes - Target Audience: Boys - Publisher: Shogakukan - Content: Manga about Japanese history - Features: Easy-to-understand explanations with illustrations Thank you for viewing.